Rituximab Plus Lenalidomide for Patients With Relapsed / Refractory Indolent Non-Hodgkin's Lymphoma (Follicular Lymphoma and Marginal Zone Lymphoma)

Progression-free survival (PFS) was defined as the time from date of randomization into the study to the first observation of documented disease progression or death due to any cause, whichever occurred first. PFS was based on the data from the IRC review using the modified 2007 International Working Group Response Criteria (IWGRC) using FDA censoring rules.

Time frame: From randomization of study drug up to disease progression or death, which occurred first; up to the data cut-off date of 22 June 2018; overall median follow-up time for all participants was 28.30 months (range: 0.1 to 51.3 months).

Population: The ITT population was defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.

DCCR was defined as the percentage of participants with a best response of complete response (CR) that lasted no less than one year (≥ 48 weeks) during the study prior to administration of new anti-lymphoma therapy. A CR is defined as a complete disappearance of any disease-related symptoms and normalization of biochemical abnormalities.

Time frame: From first dose of investigational product (IP) to data cut-off date of 22 June 2018; the median treatment duration was 11.19 months in the rituximab/lenalidomiade arm and 11.04 months in the rituximab/placebo arm

Population: The ITT population was defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.

DOCR was defined as the time from initial CR until documented PD or death. Participants who had not progressed at the time of analysis were censored at the last assessment date that the participant was known to be progression free. Participants who received a new treatment without documented progression were censored at the last assessment date that the participants was known to be progression free.

Time frame: From randomization up to data cut-off date of 22 June 2018; overall median follow-up time for all participants was 28.30 months (range: 0.1 to 51.3 months).

Population: Participants who achieved a complete response in the ITT population.

Duration of response (DOR) was defined as the time from initial response (at least PR) until documented progressive disease (PD) or death. Participants who had not progressed at the time of analysis were censored at the last assessment date that the participant was known to be progression free. Participants who received a new treatment without documented progression were censored at the last assessment date that the participants was known to be progression free.

Time frame: From randomization up to data cut-off date of 22 June 2018; overall median follow-up time for all participants was 28.30 months (range: 0.1 to 51.3 months).

Population: Participants who achieved an objective response in the ITT population.

Event-free survival (EFS) was defined as the time from date of randomization to date of first documented progression, relapse, institution of new anti-lymphoma treatment (chemotherapy, radiotherapy or immunotherapy) or death from any cause. Responding participants and those who were lost to follow up were censored at their last tumor assessment date.

Time frame: From date of randomization to data cut-off date of 22 June 2018; overall median follow-up time for all participants was 28.30 months (range: 0.1 to 51.3 months).

Population: The ITT population was defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.

Overall survival was defined as the time from randomization to death from any cause. Overall survival was censored at the last date that the participant was known to be alive for participants who were alive at the time of analysis and for participants who were lost to follow-up before death was documented.

Time frame: From date of randomization to death due to any cause (Average of 55.71 months and a maximum up to 95.2 months)

Population: The ITT population is defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.

Time to next anti-lymphoma treatment (TTNLT) was defined as the time from date of randomization to date of first documented administration of a new anti-lymphoma treatment (including chemotherapy, radiotherapy, radioimmunotherapy or immunotherapy). The time to the next anti-lymphoma treatment was of special interest to the study.

Time frame: From date of randomization to date of first documented administration of a new anti-lymphoma treatment (Average of 55.71 months and a maximum up to 95.2 months)

Population: The ITT population was defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.

TEAEs include AEs that started or worsened between the date of the first dose and 28 days after the date of the last dose. A serious adverse event (SAE) is any: • Death; • Life-threatening event; • Any inpatient hospitalization or prolongation of existing hospitalization; • Persistent or significant disability or incapacity; • Congenital anomaly or birth defect; • Any other important medical event. The investigator determined the relationship of an AE to study drug based on the timing of the AE relative to drug administration and whether or not other drugs, therapeutic interventions, or underlying conditions could provide a sufficient explanation for the event. The severity of an AE was evaluated by the investigator according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) (Version 4.03) where Grade 1 = Mild, Grade 2 = Moderate, Grade 3 = Severe, Grade 4 = Life-threatening and Grade 5 = Death

Time frame: From first dose to 28 days post last dose (Average of 55.71 months and a maximum up to 95.2 months)

Population: The safety population was defined as all participants who have received at least one dose of study medication.

Percentage of participants with a best response of at CR during the study without administration of new anti-lymphoma therapy. A CR = Complete disappearance of all detectable clinical and radiographic evidence of disease, disappearance of any disease-related symptoms, and normalization of biochemical abnormalities.

Time frame: From date of first dose up to data cut-off date of 22 June 2018; the median treatment duration was 11.19 months in the rituximab/lenalidomide arm and 11.04 months in the rituximab/placebo arm

Population: The ITT population was defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.

Percentage of participants with an objective response is defined as having a response of at least a PR during the study without administration of new anti-lymphoma therapy. A complete response = a complete disappearance of all detectable clinical and radiographic evidence of disease, disappearance of any disease-related symptoms, and normalization of biochemical abnormalities; a partial response (PR) = 50% decrease in SPD of the 6 largest dominant nodes or nodal masses. No increase in the size of other nodes, liver, or spleen. Splenic and hepatic nodules must regress by at least 50% in the SPD.

Time frame: From date of first dose to data cut-off date of 22 June 2018; the median treatment duration was 11.19 months in the rituximab/lenalidomide arm and 11.04 months in the rituximab/placebo arm

Population: The ITT population was defined as all participants who were randomized into the trial, regardless of whether they received study treatment or not.